chromium/third_party/blink/web_tests/external/wpt/css/css-contain/content-visibility/content-visibility-025.html

<!doctype HTML>
<html class="reftest-wait">
<meta charset="utf8">
<title>Content Visibility: hidden svg</title>
<link rel="author" title="Vladimir Levin" href="mailto:[email protected]">
<link rel="help" href="https://drafts.csswg.org/css-contain/#content-visibility">
<link rel="match" href="content-visibility-025-ref.html">
<meta name="assert" content="content-visibility hidden svg paints when hidden is removed">

<script src="/common/reftest-wait.js"></script>

<style>
div {
  background: blue;
  color: white;
}
svg {
  border: 1px solid black;
  background: lightblue;
}
.hidden {
  content-visibility: hidden;
}
</style>

<div>Test passes if there are circles in the light blue box below.</div>
<svg class=hidden xmlns="http://www.w3.org/2000/svg" width="400" height="300" viewBox="0 0 400 300" id="svg">
  <g stroke-width="10" transform="translate(-30)">
      <circle cx="80" cy="50" r="35" fill="#084" stroke="none"/>
      <circle cx="80" cy="50" r="20" fill="#080" stroke="#FF0"/>
      <circle cx="80" cy="120" r="35" fill="#004" stroke="none"/>
      <circle cx="80" cy="120" r="20" fill="#080" stroke="#FF0"/>
      <circle cx="80" cy="190" r="35" fill="#088" stroke="none"/>
      <circle cx="80" cy="190" r="20" fill="#080" stroke="#FF0"/>
      <circle cx="80" cy="260" r="35" fill="#008" stroke="none"/>
      <circle cx="80" cy="260" r="20" fill="#080" stroke="#FF0"/>
  </g>
</svg>
<div>Lorem ipsum consectetur adipiscing elit</div>

<script>
async function runTest() {
  document.getElementById("svg").classList.remove("hidden");
  requestAnimationFrame(takeScreenshot);
}

window.onload = () => {
  requestAnimationFrame(() => {
    requestAnimationFrame(runTest);
  });
};
</script>
</html>